Temperature Measuring Apparatus, Battery Apparatus Including the Same and Temperature Measuring Method
a technology of temperature measurement and battery, which is applied in the direction of heat measurement, secondary cell servicing/maintenance, instruments, etc., can solve the problems of inability to diagnose abnormality of pull-up resistors, failure to accurately measure temperature of battery management systems, and inability to diagnose abnormalities of pull-up resistors. to achieve the effect of preventing functional safety
Pending Publication Date: 2022-05-19
LG ENERGY SOLUTION LTD
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Benefits of technology
The invention can detect when a parameter changes, which can help prevent malfunctions in the system caused by incorrect temperature readings.
Problems solved by technology
In this case, if the resistance of the pull-up resistor changes due to external damage (this is referred to as a “parameter change failure”), the battery management system may incorrectly measure the temperature.
In this case, since the battery management system detects approximately 0V or a voltage corresponding to the power supply, abnormality of the pull-up resistor can be diagnosed.
However, when the change of the resistance in the pull-up resistance is small, the abnormality of the pull-up resistor cannot be diagnosed.
Therefore, functional safety can be adversely affected by the temperature incorrectly measured due to the parameter change failure.
Method used
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[0020]In the following detailed description, only certain embodiments of the present invention have been shown and described, simply by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals designate like elements throughout the specification.
[0021]When it is described that an element is “connected” to another element, it should be understood that the element may be directly connected to the other element or connected to the other element through a third element. On the other hand, when it is described that an element is “directly connected” to another element, it should be understood that the element is connected to the other element through no third element.
[0022]As used herein, a singular form may be ...
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A temperature measuring apparatus for measuring a temperature of a battery pack is provided. A first resistor is connected between a first power supply and a first node, and a second resistor is connected between a second node and a second power supply. A temperature-variable resistive element whose resistance is varied depending on a temperature is connected to between the first node and the second node. A processor measures the temperature of the battery pack based on at least one of a first temperature measured based on a voltage of the first node and a second temperature measured based on a voltage of the second node.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT / KR2020 / 010011 filed Jul. 29, 2020, published in Korean, which claims priority from Korean Patent Application No. 10-2019-0135681 filed on Oct. 29, 2019, all of which are incorporated herein by reference.[0002]The described technology relates to a temperature measuring apparatus and a battery apparatus including the same.TECHNICAL FIELDBackground Art[0003]An electric vehicle is a vehicle that obtains power by driving a motor mainly using a battery as a power source. The electric vehicles are being actively researched because they are alternatives that can solve pollution and energy problems of internal combustion vehicles. In addition, rechargeable batteries are used in various electronic devices other than the electric vehicles.[0004]A battery management system is used to manage the battery. The battery management system monitors in...
Claims
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Login to View More IPC IPC(8): H01M10/48G01K7/22H01M10/42
CPCH01M10/486G01K7/22H01M10/482H01M2010/4271H01M10/425G01K7/24Y02E60/10G01K15/007
InventorYU, DONGHYEONLEE, SEUNGHYUN
OwnerLG ENERGY SOLUTION LTD